
class Father {
    public int a = 10;
    public int b = 20;
}

class Son extends Father {
    public int a = 100;
    public int c = 30;
    public void Method(){
        System.out.println(super.a);
        System.out.println(this.a);
        System.out.println(b);
        System.out.println(c);
    }
}


public class Test {
    public static void main(String[] args) {
        Son son = new Son();
        son.Method();
    }
}
